Mangofruit has a relatively short storage life of about 2 to 3 weeks at 13C. In order to prolong the storage life of 'Haden' mangoes, fruit were coated with 3 concentrations (8,16 and 24 g.L-9 of the edible coating film "Sempefiesh " and then stored at 13C and 85% RH. Fruit were then evaluated every 4 days for up to 32 days for total soluble solidr (TSS), titratable acidity (TA), pH, firmness, weight loss, color of the skin, and ascorbic acid content. All 3 concentrations applied to the h i t affected j u i t ripening. TA, jirmness, and green color were higher in coated juit, and weight loss, SST, and pH were lower compared with the noncoatedBit. 'Sempei@esh'' had no efect on decay development. Ascorbic acid decreased in all storedfruit, but this decrease was slower in coatedjuit, and there were no significant differences between the different "Semper$-esh " concentrations.

Blue maize is an excellent source of bioactive components such as phenolic acids and anthocyanins but when it is processed for human consumption, these compounds decrease considerably. Therefore, blue maize could be directed to produce nutraceutical extracts. The aim of this study was to evaluate the relation between anthocyanins composition of acidified and non-acidified extracts from native and hybrid blue maize genotypes and their antiproliferative effect in mammary (MCF7), liver (HepG2), colon (Caco2 and HT29) and prostate (PC3) cancer cells. The most abundant phenolic acid was ferulic acid. Nine anthocyanins were quantified in the extracts, being Cy3-Glu the most abundant. Acylated forms were also obtained in high abundance depending of the extraction method. An extract concentration range of 4.31 to 7.23 mg/mL inhibited by 50% the growth of untransformed cells NIH3T3. Antiproliferative effect on PC3, Caco2, HepG2 and MCF7 cancer cells of acidified extracts from hybrid blue maize was larger than the observed using non-acidified extracts. Among the nine compounds that were quantified in the extracts tested, CyMalGlu I showed the strongest correlation with the reduction of cell viability in Caco2 (-0.876), HepG2 (-0.813), MCF7 (-0.765) and PC3 (-0.894). No significant correlation or differences in antiproliferative effect on HT29 was found among the extracts. The method of extraction of maize anthocyanins must be selected to obtain a high yield of CyMalGlu I more than only Cy3-Glu since acylation affects the inhibition of cancer cell growth.

2014): Total phenolics, total anthocyanins and antioxidant capacity of native and elite blue maize hybrids (Zea mays L.), CyTAJournal of Food,

Five elite blue maize hybrids and two blue maize landraces were evaluated for various quality characteristics. Hybrids showed physical characteristics demanded by dry-millers and tortilla processors: above 290 g in one hundred-kernel weight test, higher test weight (76.1-78.5 kg hl -1 ) and lower flotation index (22-61%). Hybrid maize 613 × 27 (9.9%) and 611 × 8 (9.5%) contained the highest protein. Potassium, magnesium, manganese and zinc contents of hybrid maize were higher than landraces by 15, 30, 55 and 41%, respectively. Nutrimental profile showed linoleic acid contents above 50% in 503 × 67, 613 × 27 and 611 × 8 hybrid samples. Lysine levels of landraces and hybrids 503 × 67 (33.9 g kg -1 protein) and 631 × 27 (31.7 g kg -1 protein) were higher than reported for regular white corn (27 g kg -1 protein), as well as the highest tryptophan levels for Chalqueno (6.0 g kg -1 protein) and hybrid 503 × 67 (6.9 g kg -1 protein). Highest protein quality based on its digestibility was found in hybrid 503 × 67. Results indicated that elite blue maize hybrids could be an important source of nutrimental compounds with potential for functional food industries.

No abstract

El calamar gigante (Dosidicus gigas) es de interés comercial como fuente de proteína, y presenta potencial para el desarrollo de productos alimenticios listos para consumir, entre las que se encuentran las botanas expandidas por extrusión (BEE). El objetivo fue determinar el efecto de las condiciones del proceso de extrusión sobre las propiedades fisicoquímicas de BEE elaboradas con 40% de harina de calamar (HC) y 60% de mezclas de harinas de papa (HP)/maíz (HM) en relación (p/ p) 10/50, 30/30 y 50/10. Los mejores valores de índice de expansión (2,87), densidad aparente (0,14 g/cm 3), firmeza (7,22 N), índice de solubilidad (27,76%) y de absorción (5,64 g H 2 0/g muestra) en agua, fueron obtenidos con la mezcla de mayor contenido de harina de papa. Se concluye que es posible elaborar botanas expandidas listas para consumir a partir de harina de calamar, ricas en proteína (>40%) y con buenas propiedades fisicoquímicas. Expanded snacks based on squid, corn and potato flours mixtures: Effect of the extrusion variables on the physicochemical properties

This study demonstrated that point-of-use filters using gravity-fed ultrafilters are a low-cost, effective water treatment technology for water of poor microbial quality. However, further identification of the sources and mechanisms by which water is contaminated when stored after treatment will help with designing and implementing better strategies for keeping water safe for domestic use.

A multi-residue method was developed to determine different types of pesticides in soils. An extraction with pressure and temperature, through accelerated solvent extraction (dichloromethane:acetone, 50:50, v/v). The pesticides were determined by gas chromatography with several selective detectors: electron capture detector, pulsed flame photometric detector and thermionic specific detector. The following parameters were determined: limit of detection, limit of quantification, equipment linearity (working interval), method linearity as well as, method accuracy and precision. The average recoveries ranged between 76 and 106%, with the exception of chlorothalonil, which had an average recovery of 46%. Additionally, detection limits from 0.9 to 7.6ng g -: (1) and the quantification limits from 3.00 to 25.47ng g -: (1) were estimated. In terms of linearity and precision, the results obtained were in the ranges considered adequate (R(2) ≥ 0.98 and coefficient of variation (CV) ≤ 20%), with the exception of aldrin (R(2) = 0.946, CV = 35.79%), lindane (R(2) = 0.917, CV = 32.91%) and chlorothalonil (R(2) = 0.8184, CV = 81.35%). The proposed method was used to evaluate pesticides in real soil samples, detecting concentrations over 1000ng g -: (1) for some pesticides. The method was correctly validated and provided for the rapid determination of pesticides in soil.